Martin Gardner (1914-2010) (www.martingardner.org) was The Best Friend Mathematics Ever Had, and for many is best known for his "Mathematical Games" column in Scientific American, which ran from the 1950s to the 1980s, introducing hundreds of thousands of readers to elegant ideas which still inspire "Aha!" moments today.

Martin's first loves, however, were magic, rationality and philosophy, and his favourite targets were pseudoscience and bogus science and medicine. He was first and foremost a debunker, and his book "Fads and Fallacies in the Name of Science" from 1952 set the stage modern science-based skepticism. Martin later played a major role in the founding of CSICOP and "Skeptical Inquirer" magazine.

His death five years ago ended a remarkable publishing career spanning 80 years, and over 100 books. October marked his centennial, and this is a good time to survey some of what he achieved and the legacy he leaves behind.

He was fortunate to know Martin Gardner for the last decade of his life, and chairs the Martin Gardner Centennial Committee. His website is cardcolm.org and he tweets at @CardColm. He recently published the 380-page full-colour book "Mathematical Card Magic" (CRC Press) of original principles and effects.